摘要
通过实验研究了有机玻璃由于机械加工所产生的双折射条纹的性质及其与机械加工应力的关系;建立了一种定量测定和无损检测平板有机玻璃和飞机座舱有机玻璃件机械加工应力的新方法:用光弹性仪可以测得与双折射有关的干涉条纹,则可确定加工应力。
The nature of the birefringence fringe and the relationship between the birefringence fringe and the residual stress induced by machining in PMMA were investigated by means of experiment.A mew method--birefringence measurement has been established for the quantitative determination and nondestructive evaluation of the machining stress in PMMA plates and the transparent pieces of airplane cabines. Besides, it has been discussed how to separate the birefringence induced by machining from the initial one quantitatively and how to get the distribution of the birefringence induced by machining through thickness. Birefringence measurement has been used in engineering.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1991年第8期B417-B421,共5页
Acta Aeronautica et Astronautica Sinica
关键词
机械加工
应力
有机玻璃
飞机
座舱
machining stress, polymethylmethacrylate (PMMA), birefringence measurement, photoelasticity, canopy.
